超前锚杆安设角度的数值模拟  

Numerical Simulation of Forepoling Bolt Installing Angle

作　　者：耿亚东 刘德峰[2] 

机构地区：[1]河南永华能源有限公司,河南偃师471924 [2]内蒙古科技大学,内蒙古包头014010

出　　处：《煤矿安全》2014年第1期44-46,50,共4页Safety in Coal Mines

摘　　要：通过对永华一矿12081顺槽掘进进行数值模拟，研究并确定了合适的锚杆安设角度。对不支护，超前锚杆支护安设角度15°、25°、35°、45°5种方案进行模拟研究，并对超前距离0～1．8m的范围内的支承压力、应力差和竖直方向位移的模拟监测结果进行对比分析。结果表明最合适的安设角度范围为15°～25°。Through the numerical simulation of 12081 tunneling crossheading of Yonghua 1# mine, the study determined the reasonablebolt installing angle. 5 kinds of schemes with unsupported and forepoling bolt installing angle of 15°, 25°, 35° ,45°were respectively simulated. Besides, the support pressure, stress difference and the displacements in vertical direction in ahead of the range 0 to 1.8 m were analyzed. The results showed that the most suitable installing angle range was 15°to 25°

关 键 词：数值模拟 超前锚杆 安设角度 锚杆支护 超前距离 

分 类 号：TD353[矿业工程—矿井建设]